RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
8
PIN DESCRIPTION
UTOPIA Interface Signals (52)
Pin Name
Type
Pin No.
Function
Note signals have different meanings depending on whether the UTOPIA bus is in ATM
master mode, PHY mode or Any-PHY mode. The mode is controlled by the
UTOP_MODE and ANY-PHY_EN fields in the UI_SRC_CFG and UI_SNK_CFG
registers.
All outputs are tri-state when the chip is in reset or when UI_EN is disabled in the
UI_COMN_CFG register.
All outputs have a maximum output current (IMAX) = 8 mA.
TATM_CLK/RPHY_CLK
Input
F4
ATM: Transmit UTOPIAATM Layer
Clock is the synchronization clock
input for the TATM interface.
PHY: Receive UTOPIA/Any-PHY
PHY Layer Clock is the
synchronization clock input for the
RPHY interface
Maximum frequency is 52 MHz.
TATM_SOC/RPHY_SOC
/RSOP
Output H2
ATM: Transmit UTOPIAATM Layer
Start-Of-Cell is an active high signal
asserted by the AAL1gator-8 when
TATM_D contains the first valid byte
of the cell.
PHY: Receive Any-PHY/UTOPIA
PHY Layer Start-Of-Cell is an active
high signal asserted by the
AAL1gator-8 when RPHY_D[15:0]
contains the first valid word of the
cell. AAL1gator-8 drives this signal
only when the ATM layer has
selected it for a cell transfer.
Any-PHY: This pin is the Receive
Start of Packet (RSOP) signal which
functions just like RPHY_SOC.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
35
PMC [ PMC-SIERRA, INC ]
